The Seiko 2320-5520 is a watch model based on the 2320 movement.
Parts List
| BA0N72GN00 | crystal - crystal |
| 30M06NA1 | crown - crown |
| 30M06NS1 | crown - crown |
| 0G0055B01 | case back gasket - crown and stem gasket |
| 0A2600N01 | case back gasket - case back gasket |
| DC33S | band - band |
| DC330 | band - band |
| 07R02DSH | others - hour hand |
| 07R02DSM | others - minute hand |
| 05R02CGH | others - hour hand |
| 07R02DGH | others - hour hand |
| 232008203UJ2 | others - dial |
| 232008203UJ9 | others - dial |
| 232008309999 | others - dial |
| 23201 | others - machine code |
| 2320552026 | others - case |
| 83119170 | others - case ring |
| 232055202F | others - case |
| 0354811 | others - winding stem |
| 07R02DGM | others - minute hand |
| 05R02CGM | others - minute hand |
Caliber 2320
